Everything your digital collection needs
From deep zoom and AI-powered search to non-destructive editing and IIIF manifest generation — every tool researchers and curators need, built on open standards.
Discover, explore, and engage
Tools that put researchers in direct contact with primary sources — deep zoom, AI-powered search, side-by-side comparison, and more.
Deep Zoom
Zoom from thumbnail to full resolution seamlessly. Tiled image pyramids load only the pixels you need — gigapixel manuscripts render as smoothly as a map.
AI Document Chat
Ask questions in natural language and get answers drawn directly from the documents. RAG-powered conversation with your entire collection — every answer includes citations.
Advanced Search
Search by metadata or full-text content using all words, any word, exact phrase, or wildcard matching. Over a dozen filters — date, creator, collection, language, and more.
Data Visualizations
Sunburst charts, interactive maps, timeline views, and context managers that let researchers see patterns across collections at a glance.
Compare Documents
Side-by-side viewing of multiple manuscripts, synchronized zoom, and overlay modes for comparing versions, drafts, or related materials.
Transcriptions
Full-text transcriptions are selectable and searchable. AI-powered OCR handles both printed text and handwriting, mapping every word to its coordinates on the page.
Browse Collections
Navigate collections, sub-collections, and items through an intuitive browsing interface. The hierarchy mirrors the archive — researchers explore materials the way they were originally organized.
Non-Destructive Editing
Crop, rotate, adjust brightness, and annotate without modifying the original. Every edit is a layer — the archival master is never touched.
Document Details
Context cards below the document viewer surface author, contributor, location, and sponsor information with automated search links — one click to find related materials.
Related Documents
Every document page surfaces related materials automatically — connecting letters, drafts, and manuscripts across collections so researchers discover connections they didn't know to look for.
User Profiles
Save searches, bookmark items, build personal collections, and export citations. Authenticated researchers get a workspace tailored to their research.
Download Documents
Researchers can download documents directly from the viewer — individual pages or complete documents — for offline study, citation, and reuse.
Capture, catalog, and publish
A complete curatorial toolkit — from image ingest and AI metadata extraction to annotation, OCR zones, and IIIF manifest generation.
Digital Asset Manager
Ingest, organize, and manage digital objects from capture to delivery. Batch processing, format conversion, and quality validation — all in one place.
Extract Metadata with AI
Select pages and let AI automatically extract metadata for curator review. Unrecognized terms are flagged for attention — so nothing slips through that doesn't match your controlled vocabulary.
Document Creation
Build multi-page documents from individual captures. Assign metadata, define sequences, and generate IIIF manifests — all through a curator-friendly interface.
Lightboard
Visual review interface for evaluating captures, checking color accuracy, and approving images before they enter the pipeline.
Annotations
Insert links, videos, images, or text annotations directly onto any canvas or canvas layer. Rich media annotations travel with the manifest wherever it goes.
OCR Zones
Define logical zones for OCR — multi-column layouts, image regions, marginalia. Curators draw zones so the OCR engine processes each area in the correct reading order.
Controlled Vocabularies
Standardized language fields ensure consistency across cataloging. Curators select from managed term lists — no free-text drift, no duplicates.
Nested Collections
Card view or tree view — curators can organize and add collections at any depth. Unlimited hierarchy that mirrors the way archives are actually structured.
Non-Destructive Image Editing
Curators can adjust brightness, contrast, rotation, and more — then save the result. Every edit is reversible from the backend. The archival master is never modified.
Non-Destructive Crop
Crop and save canvases without altering the original image. Thumbnails update automatically to reflect the crop — and every crop can be undone at any time.
REST API
Every feature available through the interface is also available programmatically. IIIF endpoints, metadata queries, search, and content delivery — all via documented REST APIs.
Built with
Proven, open-source technologies delivering reliability and performance at any scale.
Node.js
Server-side runtime
Express
Backend framework
Angular
Frontend framework
React
Modern UI components
MongoDB
Document database
Elasticsearch
Full-text search
IIIF
Image interoperability
REST API
Programmatic access
Docker
Container deployment
Ready to explore?
Dive into the documentation to learn how to set up, configure, and deploy Rednal for your institution.
Read the Docs